NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = I.A.Rizvi Found 29 matches. 2024AL04 J.Phys.(London) G51, 015101 (2024) S.Ali, M.Gull, K.Kumar, T.Ahmad, I.A.Rizvi, A.Agarwal, S.S.Ghugre, R.N.Ali, F.Khan Systematic study of fusion suppression and its dependency on projectile breakup threshold energy NUCLEAR REACTIONS 93Nb(20Ne, X)109Sn/108Sn/105Cd/104Cd/109In/108In/107In/105In/103Ag/101Pd/100Rh/98Rh, E=145 MeV; measured reaction products, Eγ, Iγ; deduced σ and uncertainties, an empirical formula is proposed to interrelate the degree of fusion suppression and breakup threshold energy of the incident projectile. Comparison with the universal fusion function (UFF) to estimate the degree of fusion incompleteness, PACE4 calculations. The K130 cyclotron facility at the Variable Energy Cyclotron Centre (VECC), Kolkata, India.
doi: 10.1088/1361-6471/ad0a3b
2023KU12 Phys.Atomic Nuclei 86, 51 (2023) A.Kumar Jashwal, A.Agarwal, Harshvardhan, I.A.Rizvi, R.Kumar, A.K.Chaubey Low Energy Incomplete Fusion Reactions: Probing of Entrance Channel Effect NUCLEAR REACTIONS 93Nb(13C, X), (18O, X)106In/107In/108In/105Cd/107Cd/101Ag/102Ag/103Ag/104Ag/105Ag/100Pd/101Pd/96Rh/97Rh/98Rh/99Rh/100Rh/97Ru/94Tc/95Tc/96Tc/100Tc, E=4-7 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ. Comparison with statistical model code PACE-4. National ion-beam facility of the Inter University Accelerator Centre (IUAC), New Delhi, India.
doi: 10.1134/S1063778823020096
2022AG01 Phys.Rev. C 105, 034609 (2022) A.Agarwal, A.Kumar Jashwal, M.Kumar, S.Prajapati, S.Dutt, M.Gull, I.A.Rizvi, K.Kumar, S.Ali, A.Yadav, R.Kumar, A.K.Chaubey Role of the entrance channel in the experimental study of incomplete fusion of 13C with 93Nb NUCLEAR REACTIONS 93Nb(13C, 4n)102Ag, (13C, 5n)101Ag, (13C, 4np)101Pd, (13C, 5np)100Pd, (13C, 2nα)100Rh, (13C, 3nα)99Rh, (13C, 4nα)98Rh, (13C, 5nα)97Rh, (13C, 6nα)96Rh, (13C, 4npα)97Ru, (13C, 2n2α)96Tc, (13C, 3n2α)95Tc, (13C, 4n2α)94Tc, E=63.7, 68.1, 70.8, 72.1, 73.8, 75.8, 78.5, 79.2, 82.8, 87.1 MeV; measured Eγ, Iγ, excitation functions; deduced residual production, total fusion and incomplete fusion σ(E), incomplete fusion strength function. Activation technique. Comparison to statistical model calculations (PACE). Comparison of incomplete fusion strength function to other experimental results obtained with different projectiles (16O, 18O) on 93Nb or same projectile 13C on different targets (159Tb, 165Ho, 169Tm, 175Lu). Irradiation of targets at 15UD Pelletron accelerator at the Inter-University Accelerator Center (IUAC), New Delhi.
doi: 10.1103/PhysRevC.105.034609
2021AG04 Phys.Rev. C 103, 034602 (2021) A.Agarwal, A.Kumar Jashwal, M.Kumar, S.Prajapati, S.Dutt, M.Gull, I.A.Rizvi, K.Kumar, S.Ali, A.Yadav, R.Kumar, A.K.Chaubey Effect of neutron excess in the entrance channel on the 18O + 93Nb system: An experimental study relevant to incomplete-fusion dynamics NUCLEAR REACTIONS 93Nb(18O, 3n)108In, (18O, 4n)107In, (18O, 5n)106In, (18O, 3np)107Cd, (18O, 5np)105Cd, (18O, 2nα)105Ag, (18O, 3nα)104Ag, (18O, 4nα)103Ag, (18O, 5nα)102Ag, (18O, 6nα)101Ag, (18O, 6npα)100Pd, (18O, 3n2α)100Rh, (18O, 4n2α)99Rh, (18O, 2p2α)101Tc, (18O, 3n3α)96Tc, (18O, 4n3α)95Tc, E=61.56, 68.37, 72.33, 76.84, 82.30, 84.85, 89.28, 92.19, 99.20 MeV; measured Eγ, Iγ, production σ(E) by activation method at the 15UD pelletron accelerator facility of IUAC-New Delhi. Comparisons with PACE4 theoretical calculations; deduced effect of entrance channel parameters on incomplete fusion (ICF). 103Rh, 159Tb, 169Tm, 175Lu(12C, X), 159Tb, 169Tm, 175Lu(13C, X), 93Nb, 103Rh, 159Tb, 169Tm, 175Lu(16O, X), 93Nb, 159Tb, 175Lu(18O, X), E at relative velocity=0.053c; analyzed previous and present σ(E) data for incomplete fusion; deduced ICF dependence on Coulomb factor, reaction Q value and neutron skin thickness.
doi: 10.1103/PhysRevC.103.034602
2019AL33 Phys.Rev. C 100, 064607 (2019) S.Ali, K.Kumar, M.Gull, T.Ahmad, I.A.Rizvi, A.Agarwal, A.K.Chaubey, S.S.Ghugre Systematic of fusion incompleteness in reactions induced by α cluster projectiles NUCLEAR REACTIONS 165Ho(20Ne, 3n)182Ir, (20Ne, 2np)182Os, (20Ne, 3np)181Os, (20Ne, 5np)179Os, (20Ne, α)181Re, (20Ne, 2nα)179Re, (20Ne, 3nα)178Re, (20Ne, 4nα)177Re, (20Ne, 3npα)177W, (20Ne, 4npα)176W, (20Ne, 2n2α)175Ta, (20Ne, 3np2α)173Hf, (20Ne, 3n2α)174Ta, (20Ne, 4n2α)173Ta, E=90.2, 98.4, 108.2, 121.9, 132.6, 145.0 MeV; measured off-line Eγ, Iγ, total σ(E) of observed evaporation residues (ERs) using activation method; deduced fusion σ(E), incomplete fusion probability. 89Y, 93Nb, 115In, 159Tb, 165Ho, 181Ta(12C, X), E(breakup threshold)=7.36 MeV; 49Sc, 51V, 89Y, 103Rh, 115In, 130Te, 159Tb, 165Ho, 169Tm, 181Ta(16O, X), E(breakup threshold)=7.16 MeV; 51V, 55Mn, 59Co, 159Tb, 165Ho, 169Tm(20Ne, X), E(breakup threshold)=4.73 MeV; analyzed fusion σ data to deduce critical angular momentum, and compared with prediction of sum rule. Comparison with statistical model calculations using PACE4 code. 173Ta, 179Os; measured half-life decay curves.
doi: 10.1103/PhysRevC.100.064607
2019KU18 Phys.Rev. C 100, 034616 (2019) M.Kumar, A.Agarwal, S.Prajapati, K.Kumar, S.Dutt, I.A.Rizvi, R.Kumar, A.K.Chaubey Influence of projectile structure and target deformation on incomplete fusion in the 16O + 51V system NUCLEAR REACTIONS 51V(16O, 2n)65Ga, (16O, 3np)63Zn, (16O, 4np)62Zn, (16O, 2nα)61Cu, (16O, 2pα)61Co, (16O, 2n2α)57Co, (16O, 3nα)60Cu, (16O, n2α)58Co, (16O, 3n2α)56Co, E=47.29, 61.90, 74.89, 86.68, 97.55 MeV; measured Eγ, Iγ, σ(E) by activation method; deduced total fusion σ(E), ratio of incomplete fusion (ICF) to complete fusion (CF), enhancement of the α-emitting channels. Results compared to statistical model calculations using ALICE-91 code, and to the previous experimental studies using 51V target and 12C, 16O and 20Ne projectiles. Experiment carried out using the 15UD Pelletron accelerator at the Inter-University Accelerator Center (IUAC), New Delhi.
doi: 10.1103/PhysRevC.100.034616
2018AL18 Eur.Phys.J. A 54, 56 (2018) S.Ali, T.Ahmad, K.Kumar, M.Gull, I.A.Rizvi, A.Agarwal, S.S.Ghugre, A.K.Sinha, A.K.Chaubey Role of partial linear momentum transfer on incomplete fusion reaction NUCLEAR REACTIONS 51V(20Ne, xnp), (20Ne, 2nα), (20Ne, xnp), (20Ne, xnpα), (20Ne, xn2α), (20Ne, 2p2α), E≈145 MeV; measured residues Eγ, Iγ; deduced residues yields vs cumulative thickness, most probable range, UFF (Universal Fusion Function); calculated most probable range using SRIM code, angular momentum distribution at E=70, 98, 145 MeV using CCFULL code.
doi: 10.1140/epja/i2018-12491-8
2018DU07 Acta Phys.Pol. B49, 535 (2018) S.Dutt, M.Saxena, R.Kumar, A.Jhingan, A.Agarwal, A.Banerjee, R.K.Bhowmik, C.Joshi, J.Kaur, A.Kumar, M.Matejska-Minda, V.Mishra, I.A.Rizvi, A.Stolarz, H.J.Wollersheim, P.J.Napiorkowski Re-measurement of Reduced Transition Probabilities in 132Ba NUCLEAR REACTIONS 132Ba(58Ni, x), E=175 MeV; measured Coulomb 132Ba excitation Eγ, Iγ using annular gas-filled Parallel Plate Avalanche Counter (PPAC); deduced 132Ba, and also 134,135,136,138Ba Doppler-correctedγ-ray spectra, 132Ba B(E2) values; compared with other published results.
doi: 10.5506/aphyspolb.49.535
2018GU13 Phys.Rev. C 98, 034603 (2018) M.Gull, K.Kumar, S.Ali, T.Ahmad, S.Dutt, I.A.Rizvi, A.Agarwal, R.Kumar Incomplete fusion in 16O + 89Y reactions at energies of ≈ 7 MeV/nucleon NUCLEAR REACTIONS 89Y(16O, 4n), (16O, 3np), (16O, 5np), (16O, nα), (16O, 2nα), (16O, 3nα), (16O, 2n2α), (16O, 3n2α)101Ag/101Pd/99Pd/100Rh/99mRh/98Rh/95Tc/94Tc, E AP 105 MeV; measured Eγ, Iγ of radioactive evaporation residues, σ for evaporation residues by γ-activation method, forward recoil range distributions (FRRD), complete- and incomplete-fusion Q-values and threshold energies at the 15UD accelerator facility of IUAC-New Delhi; deduced fusion function. Comparison with universal fusion function and fusion functions of 16O beam on various targets. Comparison with theoretical calculations using PACE4 code. 94Tc, 101Ag; measured half-lives of decays of ground states from decay curves for γ rays.
doi: 10.1103/PhysRevC.98.034603
2016DU07 Acta Phys.Pol. B47, 917 (2016) S.Dutt, P.J.Napiorkowski, T.Abraham, L.Janiak, M.Kisielinski, M.Komorowska, M.Kowalczyk, R.Kumar, T.Marchlewski, M.Matejska-Minda, M.Palacz, W.Piatek, L.Prochniak, I.A.Rizvi, J.Samorajczyk, M.Saxena, J.Srebrny, A.Tucholski W.Wroblewski, K.Wrzosek-Lipska, M.Zielinska Nuclear Structure Study of 104Pd by Coulomb Excitation at the Warsaw Heavy Ion Laboratory NUCLEAR REACTIONS 104Pd(32S, 32S'), E=91 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2) values.
doi: 10.5506/APhysPolB.47.917
2014KU08 Phys.Rev. C 89, 054614 (2014) K.Kumar, T.Ahmad, S.Ali, I.A.Rizvi, A.Agarwal, R.Kumar, A.K.Chaubey Role of incomplete fusion of the projectile in the 16O + 115In interaction at low energies NUCLEAR REACTIONS 115In(16O, X)116Sb/117Sb/118mSb/119I/120I/120mI/121I/122Xe/123Xe/125Xe/125Cs/127Cs/126Ba/127Ba, E=105 MeV; measured Eγ, Iγ, yields and forward recoil range distributions (FRRDs) of reaction residues using recoil catcher activation technique at IUAC-New Delhi accelerator facility; complete and incomplete fusion cross sections, breakup of 16O into 4He+12C and/or 8Be+8Be. Comparison with predictions of theoretical model code PACE4.
doi: 10.1103/PhysRevC.89.054614
2013KU08 Phys.Rev. C 87, 044608 (2013) K.Kumar, T.Ahmad, S.Ali, I.A.Rizvi, A.Agarwal, R.Kumar, K.S.Golda, A.K.Chaubey Low-energy incomplete fusion and its sensitivity to projectile structure NUCLEAR REACTIONS 165Ho(16O, X)166Tm/173Ta/174Ta/175Ta/176Ta/175W/176W/177W/175Re/176Re/177Re/178Re, E=73-105 MeV; measured Eγ, Iγ, σ(E) for complete fusion by activation method at IUAC facility in New Delhi; deduced ICF fraction. 165Ho(12C, X), E=88-165; 165Ho(20Ne, X), E=55-80 MeV; analyzed ICF fraction. Comparison with previous experimental studies, and with PACE4 statistical model calculations.
doi: 10.1103/PhysRevC.87.044608
2013KU21 Phys.Rev. C 88, 064613 (2013) K.Kumar, T.Ahmad, S.Ali, I.A.Rizvi, A.Agarwal, R.Kumar, A.K.Chaubey Influence of projectile breakup on the 16O + 115In reaction at energies ≈ 4-7 MeV/nucleon NUCLEAR REACTIONS 115In(16O, np)129Ba, (16O, np)129mBa, (16O, 2np)128Ba, (16O, 3np)127Ba, (16O, 4np)126Ba, (16O, α)127Cs, (16O, 2nα)125Cs, (16O, npα)125Xe, (16O, 3npα)123Xe, (16O, 4npα)122Xe, (16O, 5npα)121Xe, (16O, 2n2α)121I, (16O, 3n2α)120I, (16O, 3n2α)120mI, (16O, 4n2α)119I, (16O, n3α)118mSb, (16O, 2n3α)117Sb, (16O, 3n3α)116mSb, E=60-110 MeV; measured Eγ, Iγ, production σ(E) for reaction products at IUAC-New Delhi accelerator facility; deduced σ(E) for total fusion, complete fusion (CF), incomplete fusion (ICF), percentage ICF fraction. Natural In target. Activation method. Comparison with PACE4 calculations, and with previous experimental results for other reactions. Discussed projectile breakup processes and incomplete fusion (ICF) contribution.
doi: 10.1103/PhysRevC.88.064613
2011AH02 Int.J.Mod.Phys. E20, 645 (2011) T.Ahmad, I.A.Rizvi, A.Agarwal, R.Kumar, K.S.Golda, A.K.Chaubey Reaction mechanisms in 12C+93Nb system: excitation functions and recoil range distributions below 7 MeV/u NUCLEAR REACTIONS 93Nb(12C, X)101Ag/102Ag/103Ag/99Pd/100Pd/101Pd/100Rh/101Rh/97Ru/94Tc/95Tc/96Tc/93Mo/92Nb, E=47-75 MeV; measured evaporation residue products, Eγ, Iγ; deduced significant enhancement of σ due to incomplete fusion. Comparison with PACE-2 calculations.
doi: 10.1142/S0218301311018137
2011AM03 Phys.Rev. C 84, 024614 (2011) F.K.Amanuel, B.Zelalem, A.K.Chaubey, A.Agarwal, I.A.Rizvi, A.Maheshwari, T.Ahmed Role of break-up processes in the fusion of the 12C + 52Cr system NUCLEAR REACTIONS 52Cr(12C, 2n), (12C, 2np), (12C, 3np), (12C, 3nα), (12C, 4nα), (12C, npα), (12C, 2npα), (12C, 3npα), E=51-87 MeV; measured Eγ, Iγ; deduced σ(E) by γ-activation method, σ for complete fusion (CF) and incomplete fusion (ICF). Comparison with PACE4 and ALICE-91 statistical model calculations; and with experimental data for other heavy-ion reactions. Disagreement of experimental cross sections in α-emitting channels with PACE4 calculations attributed to incomplete fusion, discussed impact of frozen α-cluster structure of 12C.
doi: 10.1103/PhysRevC.84.024614
2011AM05 Eur.Phys.J. A 47, 156 (2011) F.K.Amanuel, B.Zelalem, A.K.Chaubey, A.Agarwal, I.A.Rizvi, A.Maheshwari, T.Ahmed Investigation of the influence of incomplete fusion on complete fusion of 12C-induced reactions at ≈ 4-7.2 MeV/nucleon NUCLEAR REACTIONS 52Cr(12C, 3nα), (12C, 4nα), (12C, npα), (12C, 2npα), (12C, 3npα), 59Co(12C, nα), (12C, 2nα), (12C, 3npα), (12C, 2n2α), 93Nb(12C, nα), (12C, 3nα), (12C, 3npα), (12C, n2α), (12C, 2n2α), (12C, 3n2α), (12C, 3np2α), E=4-7.2 MeV/nucleon; measured off-line Eγ, Iγ, residues using recoil catcher technique; deduced complete, incomplete fusion σ, yrast spin; calculated α emission, σ using PACE4 with different level density parameters, γ strength for different transitions.
doi: 10.1140/epja/i2011-11156-6
2008AG06 Int.J.Mod.Phys. E17, 393 (2008) A.Agarwal, I.A.Rizvi, R.Kumar, B.K.Yogi, A.K.Chaubey Measurement and analysis of excitation functions and forward recoil range distributions in 12C + 59Co system NUCLEAR REACTIONS 59Co(12C, 3np), (12C, 2n2p), (12C, nα), (12C, 2nα), (12C, 3npα), (12C, 2n2α), E=60, 65, 70, 75, 80 MeV; measured Eγ, Iγ, excitation functions, cross sections, forward recoil range distributions of evaporation residues. Comparisons with calculations using ALICE-91 and CASCADE codes.
doi: 10.1142/S0218301308007009
2008AG08 Can.J.Phys. 86, 495 (2008) A.Agarwal, I.A.Rizvi, A.K.Chaubey Non-equilibrium emission of neutrons in α-particle induced reactions with holmium NUCLEAR REACTIONS 165HO(α, 2n), 165HO(α, 3n), 165HO(α, 4n), E=31.7, 36.6, 41.1, 45.4, 49.6 MeV; measured Eγ, Iγ, σ; Stacked foil technique deduced equilibrium and non-equilibrium contributions; Comparison with geometry dependent hybrid model, ALICE91 code.
doi: 10.1139/P07-133
2002AG04 Phys.Rev. C65, 034605 (2002) A.Agarwal, I.A.Rizvi, A.K.Chaubey Excitation Function Studies of α Induced Reactions for Niobium and Preequilibrium Effects NUCLEAR REACTIONS 93Nb(α, n), (α, 2n), (α, 3n), (α, nα), E=23-37 MeV; measured σ; deduced role of pre-equlibrium particle emission. Stacked-foil activation technique.
doi: 10.1103/PhysRevC.65.034605
2001AG10 J.Phys.Soc.Jpn. 70, 2903 (2001) A.Agarwal, M.K.Bhardwaj, I.A.Rizvi, A.K.Chaubey Equilibrium and Pre-Equilibrium Studies in Some Alpha Induced Reactions on Rhodium NUCLEAR REACTIONS 103Rh(α, 2n), (α, 3n), (α, 4n), E=15-50 MeV; measured excitation functions; deduced pre-equlibrium contributions. Stacked-foil activation technique, comparison with model predictions.
doi: 10.1143/JPSJ.70.2903
2000BH06 Can.J.Phys. 78, 133 (2000) M.K.Bhardwaj, I.A.Rizvi, A.K.Chaubey Nonequilibrium Effects in α-Particles-Induced Reactions in Cs and I NUCLEAR REACTIONS 127I(α, X)130Cs/129Cs/127Cs; 133Cs(α, X)135La/133La, E=16-50 MeV; measured σ. Comparison with pre-equilibrium calculations, stacked foil, activation techniques.
doi: 10.1139/cjp-78-2-133
1994BH12 Int.J.Mod.Phys. E3, 239 (1994) M.K.Bhardwaj, I.A.Rizvi, A.K.Chaubey Alpha-Induced Reactions in Antimony NUCLEAR REACTIONS, ICPND 121,123Sb(α, n), (α, 4n), 121Sb(α, 3np), (α, 2n), 123Sb(α, 3n), E ≈ 21.9-55 MeV; measured residual production σ vs E. Stacked foil activation technique. Geometry dependent hybrid model.
doi: 10.1142/S0218301394000103
1992BH01 Phys.Rev. C45, 2338 (1992) M.K.Bhardwaj, I.A.Rizvi, A.K.Chaubey Alpha-Induced Reactions in Iridium NUCLEAR REACTIONS, ICPND 192,191Ir(α, 3n), (α, 4n), (α, 5n), 191Ir(α, n), (α, 2n), E=17-55 MeV; measured σ(E). Stacked foil activation technique, γ-ray spectroscopy. Geometry-dependent hybrid model.
doi: 10.1103/PhysRevC.45.2338
1992BH07 Int.J.Mod.Phys. E1, 389 (1992) M.K.Bhardwaj, I.A.Rizvi, A.K.Chaubey Excitation Function Studies for the Alpha Induced Reactions in Indium NUCLEAR REACTIONS, ICPND 115,113In(α, n), (α, 2n), 115In(α, 3n), (α, 4n), (α, np), (α, 2p), E ≤ 50 MeV; measured σ(E). Hybrid model analysis.
doi: 10.1142/S0218301392000205
1990CH11 Appl.Radiat.Isot. 41, 401 (1990) A.K.Chaubey, M.K.Bhardwaj, R.P.Gautam, R.K.Y.Singh, M.Afzal Ansari, I.A.Rizvi, H.Singh Pre-Equilibrium Decay Process in the Alpha Induced Reactions of Silver Isotopes NUCLEAR REACTIONS, ICPND 107Ag(α, n), (α, 2n), 109Ag(α, 2n), (α, 3n), E=threshold-50 MeV; measured σ(E). Stacked foil technique. Model calculations.
doi: 10.1016/0883-2889(90)90150-F
1989RI06 Can.J.Phys. 67, 870 (1989) I.A.Rizvi, M.K.Bhardwaj, M.Afzal Ansari, A.K.Chaubey Nonequilibrium Effects in α-Particle Induced Reactions on Gallium Isotopes NUCLEAR REACTIONS 69Ga(α, n), (α, 2n), (α, 3n), (α, 3np), 71Ga(α, 4n), (α, n), E ≈ threshold-60 MeV; measured σ(E); deduced nonequilibrium effects role. Stacked foil activation technique. Geometry dependent hybrid model.
doi: 10.1139/p89-150
1989RI08 Can.J.Phys. 67, 1091 (1989) I.A.Rizvi, M.K.Bhardwaj, M.Afzal Ansari, A.K.Chaubey Preequilibrium Emission of Multiparticles in α-Induced Reactions with 55Mn Nucleus NUCLEAR REACTIONS, ICPND Mn(α, n), (α, 2n), (α, 3n), (α, 4n), (α, nα), (α, 3n2p), (α, 3nα), E=7-60 MeV; measured σ(E). γ-spectroscopy, Ge(Li) detector. Exciton model.
doi: 10.1139/p89-188
1988SI11 Can.J.Phys. 66, 330 (1988) R.K.Y.Singh, M.A.Ansari, R.P.Gautam, I.A.Rizvi, S.Kailas Radiative Capture of Fast Neutrons in 160Gd NUCLEAR REACTIONS 160Gd(n, γ), E=0.46-3.05 MeV; measured Eγ, Iγ, σ following capture.
doi: 10.1139/p88-052
1987RI09 J.Phys.Soc.Jpn. 56, 3135 (1987) I.A.Rizvi, M.Afzal Ansari, R.P.Gautam, R.K.Y.Singh, A.K.Chaubey Excitation Function Studies of (α, xpyn) Reactions for 63,65Cu and Pre-Equilibrium Effect NUCLEAR REACTIONS, ICPND 63,65Cu(α, xnyp)66Ga/65Zn/65Ga/68Ga/67Ga, E=40 MeV; measured residual production σ(E). Stacked foil activation technique. Preequilibrium emission, geometry dependent hybrid model. Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0090. Back to query form |